Improved drain-tile machine



UNITED STATE-s. PATENT OEEIGE.

ROBERT GORDON OARLYLE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO A. O. ROBINSON, WV. J. X. ROBINSON, AND J. H. ADDISON, AND SAID J. H. ADDISON ASSIGNOR TO JOHN H. WISE.

lMPROVED DRAIN-TILE MACHINE.

Specification forming part of Letters Patent No. 89,199, dated April 20, 1869.

To all whom t may' concern Be it known that I, ROBERT GORDON CAR- LYLE, of the city and county of San Francisco, in the State of California, have invented certain new and useful Improvements in Machines for Manufacturing Drain and Water Pipes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which make part of this specification, and in which- Figure l represents a vertical central section of the machine; Fig. 2, a view, in eleva` tion, of the same; and Figs. 3 to ll, inclusive, are views showing-.the details of the same.

This invention consists in a novel combination of mechanical devices, hereinafter set forth, for molding drain or water pipes, &c.,

`in such manner as to press compactly togetherl the material of which the pipe is composed,

.and give the same a smooth and uniform finish on its inner and outer surfaces.

The machine is more particularly intended to operate with a certain known asphalt composition, but is as well adapted to be used with other material from which this class of pipes is made-as, for instance, concrete composition and other clayey mixtures.

In the accompanying drawings, which show a convenient arrangement of 'parts for carrying out the objects of my invention, A represents a vertical shaft of square or rectangular cross-section, which rotates in a step, C, at bottom, and is supported by a bearing above. The shaft A carries a bevel-wheel, D, into which meshes a corresponding pinion, E, upon a counter-shaft, F, to which rotation is communicated from any suitable prime mover. A hollow cylindrical core-barrel, B, whose outer diameter corresponds to the bore of the pipe to be molded, is tted upon the shaft A, which passes freely through a corresponding opening in its bottom. The shaft extends a sufficient distance into the core-barrel to enable the latter to be elevated far enoughto form the length of pipe desired before being released from the shaft. A water-pipe, G, extends throughout the length of the shaft A, being placed in a groove or recess formed at thickness.

one side thereof, and terminating at bottom at the center of the step 0,'where it communicates with the supply-pipe H. The pipe G is provided with a rose or sprinkler at top, through which a supply of water is afforded to the interior of the core-barrel, for the purpose of keeping the same cool while working in the hot material.

Instead of employing a separate pipe, the shaft A may be made hollow, if preferred.

In order to diminish the friction of the corebarrel upon the shaft during its elevation, rollers a. a are mounted upon horizontal journals at the bottom of the former, where the shaft passes through it, and bear against the same in V-grooves cut to receive them, as shown in Fig. 5 and section Fig. 1.

The core-barrel B is closed at top by a conical cap or cover, secured by pins, bolts, or in any other suitable manner, and so litted that a water-tight joint shall be formed between the barrel and cap, in order to prevent access of the water from the pipe G to the asphalt or other composition employed.

One or more spiral wings or blades are formed around the base of the cap, extending for about three-fourths of its circumference, their outer diameter'corresponding to that of the pipe to be formed, and their depth to its These wings are cast in a piece with the cap, but are cored out, as shown in Fig. l, the better to receive the action of the cooling spray of water.

An eyebolt, K, is secured to the apex of the cap, to which a rod, I, is attached, connecting with a hoisting-rope, by which the core-barrel is raised and lowered in the operation of the machine.

An annular metallic foundation-plate, L, is suitably secured to the frame of the machine,

:concentric with the shaft and core-barrel. A

circular recess is formed at its top and inner edge, within which rests the lower die-plate, M, which serves to give proper form to the lower end of the pipe to be made, and likewise as a base or rest for the casing or flask N.

The die-plate is secured to the foundationplate by two or more bolts. Its interior diameier is such as to allow the core-barrel to pass neatly through it while being elevated, and it is recessed or countersunk at top, corresponding with the form which it is desired to give to the lower end of the pipe.

A metallic casing, N, whose inside diameter corresponds with the outer diameter of the pipe to be manufactured, rests upon the top of the lower die-plate, M, the central portion of which is provided with projecting ribs or wings b b, for the reception of the bottom Y flange of the casing. A shoulder is formed at the junction of the die-plate and casing, in order to provide a more perfect joint; and any desired number of the wings b b is provided with hinged bolts, which can be swung into slots in the lower flange of the casing, to hold the same rmly in position during the operation of the machine.

The casing N is formed of light cast-iron, divided horizontally into two or more sections, and of sufcent height to contain a pipe ofthe length required to be made. It is likewise divided into sections vertically, for greater convenience of construction and manipulation. The different sections of the casing are united by hinged bolts and clamps O O in such manner as to be held firmly together during the operation of the machine, and readily disconnected when necessary to remove the iinished pipe.

In order to give proper form to the upper end of the pipe which is to be recessed to receive a projection similar to that upon its lower end, being the female part of a joint, a ring or upper die-plate, P, is provided. This plate is annular in form, its interior and exterior diameters corresponding to those 0f the pipe to be made,l as shaped at bottom, to correspond to the recess or countersink of the lower dieplate, M.

The plate P may be made in two parts, hinged together, and having their free ends connected by a bolt, as in the manner of the casing-clamps O. This construction enables the die-plate to be applied for finishing the pipe wit-hout removing the core-barrel entirely from the casing.

The operation of the machine is as follows: A slow motion bein g imparted vto the shaft A,

the core-barrel B is thereby revolved, and the composition of which the pipe is to be made being supplied to the casing, the screw formed on the periphery of the cap of the corebarrel packs down and solidities the material, a gradual elevation of the core-barrel on the shaft being obtained by the action of the screw, assisted, when necessary, by the rope above. The revolutions and elevation of the core-barrel continue while the material is fed to the casing, until the corebarrel reaches the top of the casing, a spray of water being constantly supplied to the interior of the former during the operation by the pipe G. Instead of water, a jet of steam may be substituted, it being alone required that a difference of temperature should exist between the core-barrel and the material used.

To avoid any adhesion of the material to the casing, which has been found to occur when asphaltum composition is used, a coating of common whitewash may be given to itsinterior. The cooling of the core-barrel by the waterspray will prevent adhesion of the material to its periphery.

When the core-barrel has been elevated to the top of the casing, the upper die-plate, P, is introduced, and, being pressed down upon the yet soft and plastic material, gives proper form to the upper end of the pipe. The Watersupply being then shut off and the core-barrel withdrawn, a reasonable time is allowed for the cooling or setting of the pipe, when the casing N being removed, the pipe is complete.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination of the shaft A and water-tube with the core-barrel, having a conical spiral-bladed top, the lower die-plate, M, and casing N, the whole arranged and operated substantially as and for the purpose set forth.

2. The combination of the vertically-movin g core-barrel B and its rollers a a with the square shaft A, as set forth.

ROBT. GORDON OARLYLE.

Witnesses:

J oHN J. CHEW, C. N. S. WALLACE. 

